Mercurial > hg > nginx-vendor-0-8
view src/http/ngx_http_special_response.c @ 88:e916a291e9aa NGINX_0_1_44
nginx 0.1.44
*) Feature: the IMAP/POP3 proxy supports SSL.
*) Feature: the "proxy_timeout" directive of the ngx_imap_proxy_module.
*) Feature: the "userid_mark" directive.
*) Feature: the $remote_user variable value is determined independently
of authorization use.
author | Igor Sysoev <http://sysoev.ru> |
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date | Tue, 06 Sep 2005 00:00:00 +0400 |
parents | 991c6e4c7654 |
children | f63280c59dd5 |
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/* * Copyright (C) Igor Sysoev */ #include <ngx_config.h> #include <ngx_core.h> #include <ngx_http.h> #include <nginx.h> static u_char error_tail[] = "<hr><center>" NGINX_VER "</center>" CRLF "</body>" CRLF "</html>" CRLF ; static u_char ngx_http_msie_stub[] = "<!-- The padding to disable MSIE's friendly error page -->" CRLF "<!-- The padding to disable MSIE's friendly error page -->" CRLF "<!-- The padding to disable MSIE's friendly error page -->" CRLF "<!-- The padding to disable MSIE's friendly error page -->" CRLF "<!-- The padding to disable MSIE's friendly error page -->" CRLF "<!-- The padding to disable MSIE's friendly error page -->" CRLF ; static char error_301_page[] = "<html>" CRLF "<head><title>301 Moved Permanently</title></head>" CRLF "<body bgcolor=\"white\">" CRLF "<center><h1>301 Moved Permanently</h1></center>" CRLF ; static char error_302_page[] = "<html>" CRLF "<head><title>302 Found</title></head>" CRLF "<body bgcolor=\"white\">" CRLF "<center><h1>302 Found</h1></center>" CRLF ; static char error_400_page[] = "<html>" CRLF "<head><title>400 Bad Request</title></head>" CRLF "<body bgcolor=\"white\">" CRLF "<center><h1>400 Bad Request</h1></center>" CRLF ; static char error_401_page[] = "<html>" CRLF "<head><title>401 Authorization Required</title></head>" CRLF "<body bgcolor=\"white\">" CRLF "<center><h1>401 Authorization Required</h1></center>" CRLF ; static char error_402_page[] = "<html>" CRLF "<head><title>402 Payment Required</title></head>" CRLF "<body bgcolor=\"white\">" CRLF "<center><h1>402 Payment Required</h1></center>" CRLF ; static char error_403_page[] = "<html>" CRLF "<head><title>403 Forbidden</title></head>" CRLF "<body bgcolor=\"white\">" CRLF "<center><h1>403 Forbidden</h1></center>" CRLF ; static char error_404_page[] = "<html>" CRLF "<head><title>404 Not Found</title></head>" CRLF "<body bgcolor=\"white\">" CRLF "<center><h1>404 Not Found</h1></center>" CRLF ; static char error_405_page[] = "<html>" CRLF "<head><title>405 Not Allowed</title></head>" CRLF "<body bgcolor=\"white\">" CRLF "<center><h1>405 Not Allowed</h1></center>" CRLF ; static char error_406_page[] = "<html>" CRLF "<head><title>406 Not Acceptable</title></head>" CRLF "<body bgcolor=\"white\">" CRLF "<center><h1>406 Not Acceptable</h1></center>" CRLF ; static char error_408_page[] = "<html>" CRLF "<head><title>408 Request Time-out</title></head>" CRLF "<body bgcolor=\"white\">" CRLF "<center><h1>408 Request Time-out</h1></center>" CRLF ; static char error_410_page[] = "<html>" CRLF "<head><title>410 Gone</title></head>" CRLF "<body bgcolor=\"white\">" CRLF "<center><h1>410 Gone</h1></center>" CRLF ; static char error_413_page[] = "<html>" CRLF "<head><title>413 Request Entity Too Large</title></head>" CRLF "<body bgcolor=\"white\">" CRLF "<center><h1>413 Request Entity Too Large</h1></center>" CRLF ; static char error_414_page[] = "<html>" CRLF "<head><title>414 Request-URI Too Large</title></head>" CRLF "<body bgcolor=\"white\">" CRLF "<center><h1>414 Request-URI Too Large</h1></center>" CRLF ; static char error_416_page[] = "<html>" CRLF "<head><title>416 Requested Range Not Satisfiable</title></head>" CRLF "<body bgcolor=\"white\">" CRLF "<center><h1>416 Requested Range Not Satisfiable</h1></center>" CRLF ; static char error_497_page[] = "<html>" CRLF "<head><title>400 The plain HTTP request was sent to HTTPS port</title></head>" CRLF "<body bgcolor=\"white\">" CRLF "<center><h1>400 Bad Request</h1></center>" CRLF "<center>The plain HTTP request was sent to HTTPS port</center>" CRLF ; static char error_500_page[] = "<html>" CRLF "<head><title>500 Internal Server Error</title></head>" CRLF "<body bgcolor=\"white\">" CRLF "<center><h1>500 Internal Server Error</h1></center>" CRLF ; static char error_501_page[] = "<html>" CRLF "<head><title>501 Method Not Implemented</title></head>" CRLF "<body bgcolor=\"white\">" CRLF "<center><h1>501 Method Not Implemented</h1></center>" CRLF ; static char error_502_page[] = "<html>" CRLF "<head><title>502 Bad Gateway</title></head>" CRLF "<body bgcolor=\"white\">" CRLF "<center><h1>502 Bad Gateway</h1></center>" CRLF ; static char error_503_page[] = "<html>" CRLF "<head><title>503 Service Temporarily Unavailable</title></head>" CRLF "<body bgcolor=\"white\">" CRLF "<center><h1>503 Service Temporarily Unavailable</h1></center>" CRLF ; static char error_504_page[] = "<html>" CRLF "<head><title>504 Gateway Time-out</title></head>" CRLF "<body bgcolor=\"white\">" CRLF "<center><h1>504 Gateway Time-out</h1></center>" CRLF ; static ngx_str_t error_pages[] = { ngx_null_string, /* 204 */ #define NGX_HTTP_LEVEL_200 1 /* ngx_null_string, */ /* 300 */ ngx_string(error_301_page), ngx_string(error_302_page), ngx_null_string, /* 303 */ #define NGX_HTTP_LEVEL_300 3 ngx_string(error_400_page), ngx_string(error_401_page), ngx_string(error_402_page), ngx_string(error_403_page), ngx_string(error_404_page), ngx_string(error_405_page), ngx_string(error_406_page), ngx_null_string, /* 407 */ ngx_string(error_408_page), ngx_null_string, /* 409 */ ngx_string(error_410_page), ngx_null_string, /* 411 */ ngx_null_string, /* 412 */ ngx_string(error_413_page), ngx_string(error_414_page), ngx_null_string, /* 415 */ ngx_string(error_416_page), #define NGX_HTTP_LEVEL_400 17 ngx_string(error_497_page), /* 497, http to https */ ngx_string(error_404_page), /* 498, invalid host name */ ngx_null_string, /* 499, client had closed connection */ ngx_string(error_500_page), ngx_string(error_501_page), ngx_string(error_502_page), ngx_string(error_503_page), ngx_string(error_504_page) }; ngx_int_t ngx_http_special_response_handler(ngx_http_request_t *r, ngx_int_t error) { ngx_int_t rc; ngx_uint_t i, err, msie_padding; ngx_buf_t *b; ngx_chain_t *out, *cl; ngx_http_err_page_t *err_page; ngx_http_core_loc_conf_t *clcf; ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, "http special response: %d, \"%V\"", error, &r->uri); rc = ngx_http_discard_body(r); if (rc == NGX_HTTP_INTERNAL_SERVER_ERROR) { error = NGX_HTTP_INTERNAL_SERVER_ERROR; } r->headers_out.status = error; if (r->keepalive != 0) { switch (error) { case NGX_HTTP_BAD_REQUEST: case NGX_HTTP_REQUEST_ENTITY_TOO_LARGE: case NGX_HTTP_REQUEST_URI_TOO_LARGE: case NGX_HTTP_TO_HTTPS: case NGX_HTTP_INTERNAL_SERVER_ERROR: r->keepalive = 0; } } if (r->lingering_close == 1) { switch (error) { case NGX_HTTP_BAD_REQUEST: case NGX_HTTP_TO_HTTPS: r->lingering_close = 0; } } clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module); if (r->err_ctx == NULL && clcf->error_pages) { err_page = clcf->error_pages->elts; for (i = 0; i < clcf->error_pages->nelts; i++) { if (err_page[i].status == error) { if (err_page[i].overwrite) { r->err_status = err_page[i].overwrite; } else { r->err_status = error; } r->err_ctx = r->ctx; r->method = NGX_HTTP_GET; return ngx_http_internal_redirect(r, &err_page[i].uri, NULL); } } } if (error == NGX_HTTP_NO_CONTENT) { /* 204 */ err = 0; } else if (error < NGX_HTTP_BAD_REQUEST) { /* 3XX */ err = error - NGX_HTTP_MOVED_PERMANENTLY + NGX_HTTP_LEVEL_200; } else if (error < NGX_HTTP_NGX_CODES) { /* 4XX */ err = error - NGX_HTTP_BAD_REQUEST + NGX_HTTP_LEVEL_200 + NGX_HTTP_LEVEL_300; } else { /* 49X, 5XX */ err = error - NGX_HTTP_NGX_CODES + NGX_HTTP_LEVEL_200 + NGX_HTTP_LEVEL_300 + NGX_HTTP_LEVEL_400; switch (error) { case NGX_HTTP_TO_HTTPS: r->headers_out.status = NGX_HTTP_BAD_REQUEST; error = NGX_HTTP_BAD_REQUEST; break; case NGX_HTTP_INVALID_HOST: r->headers_out.status = NGX_HTTP_NOT_FOUND; error = NGX_HTTP_NOT_FOUND; break; } } msie_padding = 0; if (error_pages[err].len) { r->headers_out.content_length_n = error_pages[err].len + sizeof(error_tail) - 1; if (clcf->msie_padding && r->headers_in.msie && r->http_version >= NGX_HTTP_VERSION_10 && error >= NGX_HTTP_BAD_REQUEST && error != NGX_HTTP_REQUEST_URI_TOO_LARGE) { r->headers_out.content_length_n += sizeof(ngx_http_msie_stub) - 1; msie_padding = 1; } r->headers_out.content_type.len = sizeof("text/html") - 1; r->headers_out.content_type.data = (u_char *) "text/html"; } else { r->headers_out.content_length_n = -1; } if (r->headers_out.content_length) { r->headers_out.content_length->hash = 0; r->headers_out.content_length = NULL; } rc = ngx_http_send_header(r); if (rc == NGX_ERROR || r->header_only) { return rc; } if (error_pages[err].len == 0) { return NGX_OK; } b = ngx_calloc_buf(r->pool); if (b == NULL) { return NGX_ERROR; } b->memory = 1; b->pos = error_pages[err].data; b->last = error_pages[err].data + error_pages[err].len; cl = ngx_alloc_chain_link(r->pool); if (cl == NULL) { return NGX_ERROR; } cl->buf = b; out = cl; b = ngx_calloc_buf(r->pool); if (b == NULL) { return NGX_ERROR; } b->memory = 1; b->pos = error_tail; b->last = error_tail + sizeof(error_tail) - 1; cl->next = ngx_alloc_chain_link(r->pool); if (cl->next == NULL) { return NGX_ERROR; } cl = cl->next; cl->buf = b; if (msie_padding) { b = ngx_calloc_buf(r->pool); if (b == NULL) { return NGX_ERROR; } b->memory = 1; b->pos = ngx_http_msie_stub; b->last = ngx_http_msie_stub + sizeof(ngx_http_msie_stub) - 1; cl->next = ngx_alloc_chain_link(r->pool); if (cl->next == NULL) { return NGX_ERROR; } cl = cl->next; cl->buf = b; } if (r->main == NULL) { b->last_buf = 1; } b->last_in_chain = 1; cl->next = NULL; return ngx_http_output_filter(r, out); }